Fitotoxicidade e seletividade do herbicida trifloxysulfuron sodium na mamona cultivar BRS Nordestina

Ferreira, U.; Queiroz, W. N. de; Beltrão, N. E. de M.

doi:10.1590/s1415-43662009000700014

Cited by 5 publications

(8 citation statements)

References 1 publication

(1 reference statement)

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“…Para o controle de plantas daninhas gramíneas em pós-emergência os herbicidas que apresentaram maior seletividade foram os inibidores da ACCase fluazifop, sethoxydim, haloxifop, clethodim, quizalofop, propaquizafop, fenoxaprop e butroxydim (Maciel et al, 2011). Para o controle de plantas daninhas dicotiledôneas poucos trabalhos são relatados sendo os herbicidas testados pouco seletivos à cultura da mamoneira (Ferreira et al, 2009).…”

Section: Introductionunclassified

Tolerância de mamoneira ao herbicida pendimethalin em solos com diferentes capacidades de adsorção

Silva

Sofiatti

et al. 2012

Rev. bras. eng. agríc. ambient.

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R ESU M OA mamoneira é uma espécie de crescimento inicial lento. A ausência de herbicidas registrados para esta cultura, ainda é fator limitante para sua expansão; assim, objetivou-se, com este trabalho, avaliar a tolerância da mamoneira ao herbicida pendimethalin em solos com diferentes capacidades de adsorção. O experimento foi conduzido em casa de vegetação, em delineamento inteiramente casualizado com cinco repetições e consistiu em uma combinação fatorial de oito doses do herbicida pendimethalin aplicado em pré-emergência (0; 187,5; 375; 750; 1.500; 3.000; 6.000 e 12.000 g ha -¹ i.a.) e quatro tipos de substrato, sendo três solos de textura: franco-argilo-arenosa, franco-argilosa e franco-arenosa, além do substrato arenoso. Aos 22 dias após a semeadura determinaram-se as variáveis altura de plantas, área foliar, massa fresca e seca da parte aérea, volume e massa seca do sistema radicular. Concluiu-se que a dose do herbicida pendimethalin tolerado pela mamoneira é influenciada pela capacidade de adsorção do solo. O herbicida mostrou-se seletivo à cultura não ocasionando redução do crescimento nas doses utilizadas para controle de plantas daninhas. Palavras-chave: Ricinus communis L., competição, controle químicoTolerance of castor bean to pendimethalin herbicide in soils with different adsorption capacities A B ST R A C TThe castor bean is a species of slow initial growth. The absence of registered herbicides for this crop is still a limiting factor for its expansion. The aim of this study was to evaluate the castor bean tolerance to the herbicide pendimethalin in soils with different adsorption capacities. The experiment was conducted under greenhouse conditions in a completely randomized design with five replications and consisted of a factorial combination of eight doses of the herbicide pendimethalin applied as pre-emergence (0; 187,5; 375; 750; 1500; 3000; 6000 and 12000 g ha -¹ i.a.), and four types of substrate (clay loam, sandy clay loam, sandy loam and sandy soil). At 22 days after sowing the variables: plant height, leaf area, fresh and dry mass of shoots, root system volume and dry weight were determined. It was concluded that the dose of the herbicide pendimethalin tolerated by the castor bean is influenced by the adsorption capacity of the soil. The herbicide was found to be very selective to this crop, not causing significant reduction of plant growth at the doses indicated to be used for weed control.

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Section: Introductionunclassified

Tolerância de mamoneira ao herbicida pendimethalin em solos com diferentes capacidades de adsorção

Silva

Sofiatti

et al. 2012

Rev. bras. eng. agríc. ambient.

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“…York et al (2005) found effective control of volunteer soybeans in cotton with trifloxysulfurom-sodium. This herbicide, as well as ethoxysulfuron and halosulfuronmethyl, belongs to the chemical group of sulfonylureas, whose mechanism of action is the inhibition of the ALS enzyme (Oliveira Jr, 2011), however, it is not considered selective to castor (Ferreira et al, 2009). Assis et al (2014) verified the death of soybean plants with the 36 g ha -1 of ethoxysulfuron in mixture with 0.5% (v v -1 ) mineral oil applied in V3.…”

Section: Volunteer Soybean Control With Post-emergence Herbicidesmentioning

confidence: 99%

Selectivity and efficacy of herbicides to control volunteer soybean in castor crop

Almeida¹,

Costa²,

Sofiatti³

et al. 2018

Aust J Crop Sci

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Castor bean is an alternative to many grain production areas, mainly as crop for the second season after soybean. In this scenario, there is demand for research on management of plants, resulting from remaining seeds of soybean after harvest. The objective of this work was to evaluate the selectivity and efficacy of post-emergence herbicides for the control of volunteer soybean in the castor crop. Two greenhouse experiments were carried out in a completely randomized design with four replications. The first assay was focused on the selectivity of herbicides to the castor crop, and the second to the efficacy of herbicides for soybean con trol. Evaluation of herbicide selectivity for the castor cultivar BRS Energia was carried out at 4 to 6 true leave stages. The treatments corresponded to two doses of ethoxysulfuron, halosulfuron-methyl, iodosulfuron-methyl, ioxynil, metamitron, oxadiazon and a control without any application. To evaluate the control efficacy of soybean cultivar BRS 3280RR in 3 trefoil stage, the treatments were comprised of two doses of ethoxysulfuron, halosulfuron-methyl, metamitron and a control without application. The evaluations were: control, phytointoxication and plant height at 7, 14 and 21 DAA; stem diameter, leaf area, dry mass of aerial part and roots at 21 DAA. The results showed that herbicides ethoxysulfuron (60 and 80 g ha ) and halosulfuron-methyl (75 and 112.5 g ha -1) were effective for the volunteer soybean control.

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“…Castor oil is used in paint production, cosmetics, soaps, varnishes, oils with unique characteristics (related mainly to viscosity), dyes, plastics, adhesives, fungicides, insecticides, and even prostheses and implants. Additionally, during the industrial processing of castor oil, a sub-product is generated which has great applicability as a fertilizer (SANTOS et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Castor bean crops are considered highly sensitive to weed competition (FERREIRA et al, 2009a), and the employed technology in castor bean cultivation and weed management has been quite variable between the different Brazilian production regions (MACIEL, 2006). Yield reduction has occurred due to the absence of information on weed competition (AZEVEDO et al, 2007;MACIEL et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

<b>Weed management strategies for castor bean crops

et al. 2014

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ABSTRACT. Castor bean crops are agriculturally relevant due to the quality and versatility of their oil, both for the chemical industry and for biodiesel production. Proper weed management is important for both the cultivation and the yield of castor bean crops; therefore, the intention of the present work is to review pertinent information regarding weed management, including the studies regarding weed interference periods, chemical controls for use in different crop production systems and herbicide selectivity, for castor bean crops. Weed science research for castor bean crops is scarce. One of the main weed management challenges for castor bean crops is the absence of herbicides registered with the Ministry of Agriculture, Livestock and Food Supply (MALFS). Research for viable herbicides for weed control in castor bean crops should be directed by research and/or rural extension institutions, associations and farmers cooperatives, as well as by manufactures, for the registration of these selective herbicides, which would be primarily used to control eudicotyledons in castor bean crops. New studies involving the integration of weed control methods in castor bean also may increase the efficiency of weed management, for both small farmers using traditional crop methods in the Brazilian Northeast region, as well as for areas with the potential for large scale production, using conservation tillage systems, such as the no-tillage crop production system. Keywords: weed competition, herbicides, selectivity, Ricinus communis. Estratégias de manejo de plantas daninhas na cultura da mamoneira RESUMO.A cultura da mamoneira apresenta destacada relevância principalmente devido à qualidade e versatilidade de seu óleo tanto na indústria química como para produção de biodiesel. Considerando a importância do manejo de plantas daninhas para o cultivo e produtividade da mamoneira, o presente trabalho teve como objetivo abordar as principais informações disponíveis sobre o assunto, entre as quais foram destacados os estudos de períodos de interferência das plantas daninhas, controle químico em diferentes sistemas de produção e seletividade de herbicidas à cultura. Verificou-se que os resultados de pesquisa sobre o manejo da cultura da mamona são escassos, nos mais variados aspectos da ciência das plantas daninhas. Uma das principais dificuldades para o controle de plantas daninhas na cultura da mamona é a atual ausência de herbicidas registrados no MAPA. As informações existentes descrevem perspectivas viáveis que necessitam ser direcionadas por instituições de pesquisa e/ou extensão rural, associações e cooperativas de produtores rurais, assim como por empresas fabricantes, para o registro de herbicidas seletivos, principalmente para o controle de espécies eudicotiledôneas. Novos estudos envolvendo a integração de métodos de controle de plantas daninhas em mamoneira também podem aumentar a eficiência no manejo, tanto para pequenas propriedades da tradicional região do Nordeste brasileiro, assim como para áreas com potencial de p...

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Fitotoxicidade e seletividade do herbicida trifloxysulfuron sodium na mamona cultivar BRS Nordestina

Cited by 5 publications

References 1 publication

Tolerância de mamoneira ao herbicida pendimethalin em solos com diferentes capacidades de adsorção

Tolerância de mamoneira ao herbicida pendimethalin em solos com diferentes capacidades de adsorção

Selectivity and efficacy of herbicides to control volunteer soybean in castor crop

<b>Weed management strategies for castor bean crops

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